Improvement in bellows for blow-pipes



NITED STATES PATENT OFFICE.

H. OASSELL AND W. F. SEMPLE, OF FREDEBIOKTOWN, OHIO. I

IMPROVEMENT IN BELLOWS FOR BLOW-PIPS.

Specification forming part of Letters Patent No. 341,479, dated February25, 1862.

To all whom it may concern:

Be it known that'we, H. OASSELL and W. F. SEMPLE, of Fredericktown, inthe county of Knox and State of Ohio, have invented a new and ImprovedBlow-Pipe; and we dohereby declare that the following is a full andexact description of the same, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, in which--Figure lis an end elevation of the blowpipe, and Fig. 2.is a verticallongitudinal section of the same on line y y.

Similar letters of reference in the two figures denote the same part.

Our invention consists of a blow-pipe composed of the parts and havingthe operation as hereinafter set forth.

lTo enable others skilled in the art to make and use our invention, wewill proceed to describe its construction and operation, as follows:

In' the drawings, A represents a platform held to position by theuprights a and b and v legs c and d. Secured to the under side of saidplatformV are the receiving air-chambers B and C, provided withingressyalves e' and f and egress-valves g and 71..

J is a horizontal shaft, having its bearing in the uprights a and o, andhaving secured upon its outer end a treadle, K. Immediately beneath thechambers B and G this shaft has secured upon it the arms or levers N.Connecting said arms with the receiving-chambers B and O are the rods oand o', secured at their one end to the head-pieces r r and jointed attheir other end to the arms N, as at s, as shown by drawings, therebycausing the chambers B and C to be successively depressed and drawn out.Upon the upper side of platform A is the discharge-air chamber D,provided with a discharge-opening, i, and receiving air through theegress-valves g and h of chambers B and C, said chamber being depressedor caused to contract by means of the spiral spring k, which is coiledaround the upright F and held between the cross-piece G and thehead-piece Z. The upright F is held to position by and has its movementin the cross-piece G, which is secured by supports m.

I represents tubing for conveying the air to any desired point, and isprovided with a nozzle, W, and also has an arm, X, to enable theoperator to direct the saine.

The operation of the blow-pipe is as follows: The operator, by pressureupon the treadle K, by reason of the several connections, causes thechambers B and C to be successively depressed and drawn out, as shown,when, owing to the outward pressure of air, the valve e is forced openand the air passes into the chamber B. The same movement which effectsthe above action causes the chamber C to be depressed, when the air inthe same forces open the egress-valve h and passes from thence into thedischarge-chamber D. The air in this chamber is then, by reason of thepressure caused by the spring le, forced through the discharge-openingc' and the conveying-tube I to the desired point. An opposite movementby the operator causes the chamber C to be drawn out and the chamber Bto be depressed,

effecting the opening of the valves f and g and 'H. OASSELL.

NV. F. SEMPLE.

Witnesses:

Moses BLACKBURN, G. W. SARGENT.

